Improvement in devices for making water-traps



R. CUNNINGHAM.

Devices for MakingWater-Traps.

No. 139,946. Patentedlune17,1873.

wn'NEssEs: INVENTORI AM. PHOTO-Lf/HOBRAIHIC ca NJ. (nsaomvsls macsss) VROBERT CUNNINGHAM, OF CHICAGO, ILLINOIS.

IMPROVEMENT IN DEVICES FOR MAKING WATER-TRAPS.

Specification formingpart of Letters Patent No. 139,946, dated J une 17,1873 application filed March 10, 1873.

To all whom it may concern:

' Be it known that I, ROBERT CUNNINGHAM, of Chicago, in the county ofCook and State of Illinois, have invented a new and Improved Device forMaking Lead or Composition VVater Traps and Bends; and I do herebydeclare the following to be a full description thereof, reference beinghad to the accompanying drawings making a part of this specification, inWhich- Figure 11 represents the device to be at tached to a reservoirholding the hot lead or composition to be forced through the die B B, byany suitable power, (said reservoir not shown in the drawings.) A Arepresent the diaphragm, to be moved to either side by any suitablemeans. Fig. 2, A A represent the perforated diaphragm removed. Fig. 3represents the die B B, the movable diaphragm A A, and the mandrel Csupported by the wings D D D.

The nature of my invention consists in a device by means of which leador composition, in being 'forced through a die and around a mandrel, isgraduated and controlled in its passage by a movable perforateddiaphragm or gage, so that the quantity of lead or composition isincreased or diminished on either side alternately, whereby it assumesany desired curve, and is thus formed into a trap or bend of uniformsize and thickness in every part.

When in use, if the diaphragm A A is in the center, the lead orcomposition will pass out in the form of a straight pipe. By movin g thediaphragm A Ato one side it will reduce the amount of lead orcomposition passing out on that side, and allowit to pass out on theother side, forming a curve. Then, by moving the diaphragm A A back tothe center, the com position will pass out'as' before in the form of astraight pipe. Now, move the diaphragm A A to the opposite side and itwill reduce the amount of lead or composition passing out on that sideand allow it to pass out on the other side, and form a curve the reverseof the first, and by againmoving the diaphragm A A to the center it willallow the lead or composition to pass out, forming a straight pipe.

What I claim as new is as follows:

The combination of the diaphragm A A, or its equivalent, with the die BB and mandrel C, constructed and operated substantially as set forth.

ROBERT CUNNINGHAM. Witnesses:

SIMEoN W. KING, SILAS S. WILLARD.

